Thank you Maarten and others who responded to my problem.
I followed�Marteen suggestion to update STATA by typing "update all".
After update,�I run the multinominal probit model and�It works well. It did not show any error this time.�
I greatly appreciate your help.
Humnath
----- Original Message ----
> From: Maarten buis <[email protected]>
> To: [email protected]
> Sent: Saturday, June 21, 2008 7:38:02 PM
> Subject: Re: st: Multinomial probit model error
>
> > Zitat von Humnath Bhandari :
> > > I run multinomial probit regression model with this three
> categories
> > > of poverty as dependent variable and sociodemographic factors as�
> > > independent variable. I use STATA 9.2 to run this program but it�
> > > gave me the following error:
> > >� � � � � � � � �
> > > :� 3499� _mprobit_weights_roots_laguerre() not found
>
> Sounds like you only partially updated your Stata. Type withing Stata:
> -update all- and see if the problem disappears.
>
> --- Martin Weiss wrote:
> > Not sure about the error, but have you considered using the�
> > multinomial logit results? Probit and logit usually give similar�
> > results, but I am not quite sure whether this rule carries over to
> > the multinomial case...
>
> Traditionally multinomial probits are used to relieve the IIA
> assumption, however as the implementation in official Stata does not
> allow for correlation between the error terms this is not applicable
> here. So you are just as well off (or as bad off) with -mlogit-. If the
> aim is to avoid IIA, you should look at -findit mvprobit-.
>
> Hope this helps,
> Maarten
>
> -----------------------------------------
> Maarten L. Buis
> Department of Social Research Methodology
> Vrije Universiteit Amsterdam
> Boelelaan 1081
> 1081 HV Amsterdam
> The Netherlands
>
> visiting address:
> Buitenveldertselaan 3 (Metropolitan), room Z434
>
> +31 20 5986715
>
> http://home.fsw.vu.nl/m.buis/
> -----------------------------------------
>
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